The Bayer designation Nu Sagittarii (Nu Sgr, ν Sagittarii, ν Sgr) is shared by two star systems, ν Sagittarii and ν Sagittarii, in the zodiac constellation Sagittarius. The two stars are separated by 0.23° in the sky.
Nu Sagittarii has the traditional name Ain al Rami, which is from the Arabic عين الرامي ain ar-rāmī meaning eye of the archer. Both of the ν stars, together with τ Sgr, ψ Sgr, ω Sgr, 60 Sgr and ζ Sgr were Al Udḥiyy, the Ostrich's Nest. Nu Sagittarii is often cited as one of the earliest identified double stars. In the Almagest, Ptolemy describes the star as "nebulous and double", referring to the double nature of the star.
References
- ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York: Dover Publications Inc. p. 355. ISBN 0-486-21079-0. Retrieved 2012-09-04.
- Plotner, Tammy; Vogt, Ken (2009), The Night Sky Companion: A Yearly Guide to Sky-Watching 2009, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media, p. 266, ISBN 978-0387795096.
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